Christa Crawford

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A whopping 87 out of 91 former NFL players who donated their brains to science have tested for positive for chronic traumatic encephalopathy (CTE), a degenerative brain disease that causes memory loss, dementia, and depression. The study, based on information from the largest brain bank in the …

A surprising new discovery shows that some brain cells are far more malleable than previously thought<p>The human brain is often said to be the most complex object in the known universe, and there’s good reason to believe that this old cliché is true. Even the apparently simple task of compiling a …

It's 30,000 years old and still ticking: A giant virus recently discovered deep in the Siberian permafrost reveals that huge ancient viruses are much more diverse than scientists had ever known.<p>They're also potentially infectious if thawed from their Siberian deep freeze, though they pose no danger …